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Reverse engineering Xiaomi air purifier NFC stickers

flamingo-tech.nl

111–118 of 118 posts

Re: Reverse engineering Xiaomi air purifier NFC stickers

#111

Earlier quoted context omitted.

Nothing is going to be able to pull cat hair out of the air before it hits the ground without creating extreme wind.

It's fine if it hits the ground, as long as it doesn't get disturbed over and over into my food and face.

Wouldn't a robot vacuum work better than a fan? That's what I use to keep husky fluff somewhat under control.

Re: Reverse engineering Xiaomi air purifier NFC stickers

#112
post #110

hold down back button and front button till it beeps release front button keep holding down back till it beeps again then you'll see entering engineering menu disconnect power restart this completely resets all memory

>this completely resets all memory

Enabling the user to do what?

Re: Reverse engineering Xiaomi air purifier NFC stickers

#113
post #112
post #110

hold down back button and front button till it beeps release front button keep holding down back till it beeps again then you'll see entering engineering menu disconnect power restart this completely resets all memory

>this completely resets all memory Enabling the user to do what?

oh my bad, since it wipes all memory, includes number of hours the filter(with RFID) is used, thus resetting the filter to 100% health again without giving it a brand new RFID to accumulate the hours on.

Re: Reverse engineering Xiaomi air purifier NFC stickers

#114

The big problem I see with DRM on air filters is that air filters don't do anything complicated. Remove the electronics module and connect the fan directly to power. Done. They should have done that in the factory and pocketed the profit from not buying electronics and NRE. (This is less possible on things like printers, which have to synthesize somewhat complicated motion, carefully release ink at the right time, et…

I saw an article about someone literally just tying an air filter to the front of a construction fan, and apparently it worked well to improve the air quality in the room it was in (it was bad to begin with, of course).

It’s a very simple concept hidden behind a lot of unnecessary technology.

Re: Reverse engineering Xiaomi air purifier NFC stickers

#115
post #111

Earlier quoted context omitted.

It's fine if it hits the ground, as long as it doesn't get disturbed over and over into my food and face.

Wouldn't a robot vacuum work better than a fan? That's what I use to keep husky fluff somewhat under control.

Hmm, that's a good point, thank you!

Re: Reverse engineering Xiaomi air purifier NFC stickers

#116
post #6

I think my question with this would be: How accurate is the filter durability that the normal filter air purifier tracks? If it tracks reasonably well (which, without more info, I have my doubts for the same reason printer ink cartridge capacity tracking is bad), wouldn't using these stickers kind of defeat the purpose of using the filter in the air purifier, since these kinds of filters do have finite durability and…

The filter durability is time-based in my experience: I set up several air purifiers at the same time in December 2021 but used them in different areas, i.e., with different filter loads. The air purifiers ran 24/7 and mostly in automatic mode, except for some hours after known possible coronavirus exposures. Official end of filter life was reached after about five months and for all filters on the same day. The air…

>additional few months

Xiaomi filter processing Canadian air in a semi high traffic area after 2 years looks better than my Asian country filter after 6 months.

Re: Reverse engineering Xiaomi air purifier NFC stickers

#118
post #102

Nice. Bought some. The air here is already really good (~10 reading) most of the time so I reckon I can run my filters much longer than Xiaomi thinks is appropriate.

Been running my filter for more than a year. When it tells you it's the filter is done you can just scratch the NFC tag and reset the counter by holding the back button.
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